title: Integrated photonic coupler based on frustrated total internal reflection.
abstract: An optical coupler for integrated photonic circuits is presented and analyzed. The coupler is based on frustrated total internal reflection (FTIR) and offers high efficiency in a compact footprint. Analytic expressions for the transmission and reflection coefficients of the coupler are obtained using a plane-wave theory and experimentally verified. Finite-difference time-domain modeling of FTIR is discussed and modeling results of the coupler are presented. A parametric discussion of the FTIR coupler provides design tools for making 3 dB couplers.
authors.affiliation: Department of Electrical Engineering, Southern Methodist University, P.O. Box 750338 Dallas, Texas 75275-0338, USA.
authors.forename: Nathan R
authors.initials: NR
authors.lastname: Huntoon
authors.forename: Marc P
authors.initials: MP
authors.lastname: Christensen
authors.forename: Duncan L
authors.initials: DL
authors.lastname: MacFarlane
authors.forename: Gary A
authors.initials: GA
authors.lastname: Evans
authors.forename: C S
authors.initials: CS
authors.lastname: Yeh